x86_64-managarm-gcc -pthread -Wall -Wextra crypt.c -o crypt -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv crypt.c: In function ‘main’: crypt.c:10:24: error: implicit declaration of function ‘crypt’ [-Wimplicit-function-declaration] 10 | char* hashed = crypt("foo", "ba"); | ^~~~~ crypt.c:10:24: error: initialization of ‘char *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion]